Lamp for a vehicle



FIG. 1 is a front bottom perspective view of the lamp for a vehicle of my new design;

FIG. 2 is a bottom perspective view thereof taken from the left side;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a right side view thereof, the left side view being identical thereto. 

The ornamental design for a lamp for a vehicle, as shown and described. 